Cace WinPcap 4.0.2 repackaging?

I am attempting to repackage Cace WinPcap 4.0.2 since the NullSoft installer does not allow any type of silent installation. My package works great except that a reboot is required in order for it to work properly. The native installer does not require a reboot. I have narrowed it down to an issue with the NetGroup Packet Filter Driver. It does not get loaded until after a reboot with my package. I have been unable to find out how you manually load or start a .sys file. I'm not even sure if I'm asking the right question. Here are the entries in the Registry table: